Honduran-U.S. Relations (open access)

Honduran-U.S. Relations

This report examines current political and economic conditions in Honduras as well as issues in Honduran-U.S. relations.
Date: August 4, 2009
Creator: Meyer, Peter J.
Object Type: Report
System: The UNT Digital Library
Hurricane Katrina: Barriers to Mental Health Services for Children Persist in Greater New Orleans, Although Federal Grants Are Helping to Address Them (open access)

Hurricane Katrina: Barriers to Mental Health Services for Children Persist in Greater New Orleans, Although Federal Grants Are Helping to Address Them

Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses the protection of children during disaster recovery and to provide highlights of our July 2009 report entitled Hurricane Katrina: Barriers to Mental Health Services for Children Persist in Greater New Orleans, Although Federal Grants Are Helping to Address Them. The greater New Orleans area has yet to fully recover from the effects of Hurricane Katrina, which made landfall on August 29, 2005. One issue of concern in the recovery is the availability of mental health services for children. In our report, we estimated that in 2008 about 187,000 children were living in the greater New Orleans area--which we defined as Jefferson, Orleans, Plaquemines, and St. Bernard parishes. Many children in the greater New Orleans area experienced psychological trauma as a result of Hurricane Katrina and its aftermath, and studies have shown that such trauma can have long-lasting behavioral, psychological, and emotional effects on children. Poor children in this area may also be at additional risk, because studies have also shown that children who grow up in poverty are at risk for the development of mental health disorders. In 2007 the poverty rate for each of …
Date: August 4, 2009
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Passports: Current Regulations (open access)

Passports: Current Regulations

This report discusses current U.S. passport requirements and costs, as well as related policy concerns.
Date: August 4, 2009
Creator: Epstein, Susan B.
Object Type: Report
System: The UNT Digital Library
Political Status of Puerto Rico: Options for Congress (open access)

Political Status of Puerto Rico: Options for Congress

This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: August 4, 2009
Creator: Bea, Keith & Garrett, R. Sam
Object Type: Report
System: The UNT Digital Library
Section 811 and Other HUD Housing Programs for Persons with Disabilities (open access)

Section 811 and Other HUD Housing Programs for Persons with Disabilities

None
Date: August 4, 2009
Creator: Perl, Libby
Object Type: Report
System: The UNT Digital Library
Single crystalline mesoporous silicon nanowires (open access)

Single crystalline mesoporous silicon nanowires

Herein we demonstrate a novel electroless etching synthesis of monolithic, single-crystalline, mesoporous silicon nanowire arrays with a high surface area and luminescent properties consistent with conventional porous silicon materials. These porous nanowires also retain the crystallographic orientation of the wafer from which they are etched. Electron microscopy and diffraction confirm their single-crystallinity and reveal the silicon surrounding the pores is as thin as several nanometers. Confocal fluorescence microscopy showed that the photoluminescence (PL) of these arrays emanate from the nanowires themselves, and their PL spectrum suggests that these arrays may be useful as photocatalytic substrates or active components of nanoscale optoelectronic devices.
Date: August 4, 2009
Creator: Hochbaum, A.I.; Gargas, Daniel; Jeong Hwang, Yun & Yang, Peidong
Object Type: Article
System: The UNT Digital Library
Time Resolved Annular Dark Field Imaging of Catalyst Nanoparticles (open access)

Time Resolved Annular Dark Field Imaging of Catalyst Nanoparticles

Dynamic transmission electron microscopy (DTEM) has the potential to provide insight into nanoparticle catalyst dynamics by obtaining direct images with high spatial and temporal resolution. To date, the limited signal to noise ratios attainable for dispersed nanoparticle samples have made such studies difficult to perform at the highest resolution. These limitations have been overcome by the fabrication of an annular objective lens aperture that permits images to be obtained with a 5 fold increase in the signal to background ratio. This annular dark field imaging mode is shown here to vastly improve the contrast attainable in 15ns pulsed electron images and allows particles as small as 30nm in diameter to be observed.
Date: August 4, 2009
Creator: Masiel, D J; Reed, B W; LaGrange, T B; Campbell, G H; Guo, T & Browning, N D
Object Type: Article
System: The UNT Digital Library
Sri Lanka: Background and U.S. Relations (open access)

Sri Lanka: Background and U.S. Relations

This report provides historical, political, and economic background on Sri Lanka and examines U.S.-Sri Lankan relations and policy concerns. Congressional interest in Sri Lanka has focused on renewed and serious violent ethnic conflict in a quarter-century-old civil war, an attendant humanitarian emergency, and efforts to revive a moribund peace process.
Date: July 4, 2009
Creator: Kronstadt, K. Alan & Vaughn, Bruce
Object Type: Report
System: The UNT Digital Library
81st Texas Legislature, Senate Bill 1068, Chapter 283 (open access)

81st Texas Legislature, Senate Bill 1068, Chapter 283

Bill introduced by the Texas Senate relating to allowing a governmental body to redact certain personal information under the public information law without the necessity of requesting a decision from the attorney general and allowing information about a public officer or public employee to be withheld if disclosure would pose a substantial risk of physical harm.
Date: June 4, 2009
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 77 (open access)

81st Texas Legislature, Senate Concurrent Resolutions 77

Concurrent resolution introduced by the Texas Senate and House of Representatives relating to approving the system-wide settlement agreement with the United States Department of Justice resolving certain investigations of state mental retardation facilities.
Date: June 4, 2009
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
Aluminum Solubility and Its Effect on Sodium Management (open access)

Aluminum Solubility and Its Effect on Sodium Management

This report addresses the aluminum solubility and its effect on sodium management.
Date: June 4, 2009
Creator: Herting, D. L.
Object Type: Article
System: The UNT Digital Library
Calix[4]arene Based Single-Molecule Magnets (open access)

Calix[4]arene Based Single-Molecule Magnets

Single-molecule magnets (SMMs) have been the subject of much interest in recent years because their molecular nature and inherent physical properties allow the crossover between classical and quantum physics to be observed. The macroscopic observation of quantum phenomena - tunneling between different spin states, quantum interference between tunnel paths - not only allows scientists to study quantum mechanical laws in great detail, but also provides model systems with which to investigate the possible implementation of spin-based solid state qubits and molecular spintronics. The isolation of small, simple SMMs is therefore an exciting prospect. To date almost all SMMs have been made via the self-assembly of 3d metal ions in the presence of bridging/chelating organic ligands. However, very recently an exciting new class of SMMs, based on 3d metal clusters (or single lanthanide ions) housed within polyoxometalates, has appeared. These types of molecule, in which the SMM is completely encapsulated within (or shrouded by) a 'protective' organic or inorganic sheath have much potential for design and manipulation: for example, for the removal of unwanted dipolar interactions, the introduction of redox activity, or to simply aid functionalization for surface grafting. Calix[4]arenes are cyclic (typically bowl-shaped) polyphenols that have been used extensively in …
Date: June 4, 2009
Creator: Karotsis, Georgios; Teat, Simon J.; Wernsdorfer, Wolfgang; Piligkos, Stergios; Dalgarno, Scott J. & Brechin, Euan K.
Object Type: Article
System: The UNT Digital Library
Circularly Polarized Luminescence in Enantiopure Europium and Terbium Complexes with Modular, All-Oxygen Donor Ligands (open access)

Circularly Polarized Luminescence in Enantiopure Europium and Terbium Complexes with Modular, All-Oxygen Donor Ligands

The modular syntheses of three new octadentate, enantiopure ligands are reported, one with the bidentate chelating unit 2-hydroxyisophthalamide (IAM) and two with bidentate 1-hydroxy-2-pyridinone (1,2-HOPO) units. A new design principle is introduced for the chiral, non-racemic hexamines which constitute the central backbones for the presented class of ligands. The terbium(III) complex of the IAM ligand, as well as the europium(III) complexes of the 1,2-HOPO ligands, are synthesized and characterized by various techniques (NMR, UV, CD, luminescence spectroscopy). All species exhibit excellent stability and moderate to high luminescence efficiency (quantum yields {phi}{sub Eu} = 0.05-0.08 and {phi}{sub Tb} = 0.30-0.57) in aqueous solution at physiological pH. Special focus is put onto the properties of the complexes in regard to circularly polarized luminescence (CPL). The maximum luminescence dissymmetry factors (glum) in aqueous solution are high with |glum|max = 0.08-0.40. Together with the very favorable general properties (good stability, high quantum yields, long lifetimes), the presented lanthanide complexes can be considered as good candidates for analytical probes based on CPL in biologically relevant environments.
Date: June 4, 2009
Creator: Seitz, Michael; Do, King; Ingram, Andrew; Moore, Evan; Muller, Gilles & Raymond, Kenneth
Object Type: Article
System: The UNT Digital Library
Conference-EC-US Task Force Joint US-EU Workshop on Metabolomics and Environmental Biotechnology (open access)

Conference-EC-US Task Force Joint US-EU Workshop on Metabolomics and Environmental Biotechnology

Since 1990, the EC-US Task Force on Biotechnology Research has been coordinating transatlantic efforts to guide and exploit the ongoing revolution in biotechnology and the life sciences. The Task Force was established in June 1990 by the European Commission and the White House Office of Science and Technology Policy. The Task Force has acted as an effective forum for discussion, coordination, and development of new ideas for the last 18 years. Task Force members are European Commission and US Government science and technology administrators who meet annually to enhance communication across the Atlantic, and to encourage collaborative research. Through sponsoring workshops, and other activities, the Task Force also brings together scientific leaders and early career researchers from both sides of the Atlantic to forecast research challenges and opportunities and to promote better links between researchers. Over the years, by keeping a focus on the future of science, the Task Force has played a key role in establishing a diverse range of emerging scientific fields, including biodiversity research, neuroinformatics, genomics, nanobiotechnology, neonatal immunology, transkingdom molecular biology, biologically-based fuels, and environmental biotechnology. The EC-US Task Force has sponsored a number of Working Groups on topics of mutual transatlantic interest. The idea to …
Date: June 4, 2009
Creator: Young, PI: Lily Y. & Zylstra, Co-PI: Gerben J.
Object Type: Report
System: The UNT Digital Library
Export Controls: Fundamental Reexamination of System Is Needed to Help Protect Critical Technologies (open access)

Export Controls: Fundamental Reexamination of System Is Needed to Help Protect Critical Technologies

Testimony issued by the Government Accountability Office with an abstract that begins "In 2007, GAO designated ensuring the effective protection of technologies critical to U.S. national security interests as a high-risk area. Each year, the Department of Defense spends billions of dollars to develop and produce technologically advanced weaponry. To enhance its foreign policy, security, and economic interests, the U.S. government must approve selling these weapons and defense-related technologies overseas and has a number of programs to identify and protect the critical technologies involved in these sales. These programs include export control systems for weapons and defense-related technologies, the foreign military sales program, and reviews of foreign investments in U.S. companies. Yet, these weapons and technologies continue to be targets for theft, espionage, reverse engineering, and illegal export. This testimony (1) provides an overview of the safety net of government programs and processes aimed at ensuring the effective protection of technologies critical to U.S. national security interests and (2) identifies the weaknesses and challenges in the U.S. export control system--one of the government programs to protect critical technologies. This statement is based on GAO's high-risk report and its extensive body of work on the government's programs designed to protect technologies …
Date: June 4, 2009
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Factors Affecting the Demand for Long-Term Care Insurance: Issues for Congress (open access)

Factors Affecting the Demand for Long-Term Care Insurance: Issues for Congress

This report provides information about the issues for Congress on Factors Affecting the Demand for Long-Term Care Insurance. This report will discuss the role of LTCI in financing LTC costs and current trends in the LTCI industry.
Date: June 4, 2009
Creator: Mulvey, Janemarie
Object Type: Report
System: The UNT Digital Library
The Federal Protective Service and Contract Security Guards: A Statutory History and Current Status (open access)

The Federal Protective Service and Contract Security Guards: A Statutory History and Current Status

The Federal Protective Service (FPS) - within U.S. Immigration Customs Enforcement (ICE) in the Department of Homeland Security (DHS) - is responsible for protecting federal government property, personnel, visitors, and customers, including property leased by the General Services Administration (GSA). This report describes the FPS in brief as well as legislative actions currently being discussed in the 111th Congress that could affect FPS in the future.
Date: June 4, 2009
Creator: Reese, Shawn
Object Type: Report
System: The UNT Digital Library
Final Report for the MANNRRSS II Program Management of Nevada's Natural Resources with Remote Sensing Systems, Beatty, NV (open access)

Final Report for the MANNRRSS II Program Management of Nevada's Natural Resources with Remote Sensing Systems, Beatty, NV

This document provides the Final Report on the Management of Nevada’s Natural Resources with Remote Sensing Systems (MANNRRSS) II program. This is a U.S. Department of Energy (DOE)-funded project tasked with utilizing hyperspectral and ancillary electro-optical instrumentation data to create an environmental characterization of an area directly adjacent to the Nevada Test Site (NTS).
Date: June 4, 2009
Creator: Miller, Lester; Horowitz, Brian; Kratt, Chris; Minor, Tim; Zitzer, Stephen F.; Taranik, James. V. et al.
Object Type: Report
System: The UNT Digital Library
International Food Assistance: Local and Regional Procurement Provides Opportunities to Enhance U.S. Food Aid, but Challenges May Constrain Its Implementation (open access)

International Food Assistance: Local and Regional Procurement Provides Opportunities to Enhance U.S. Food Aid, but Challenges May Constrain Its Implementation

Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses how local and regional procurement (LRP) can provide opportunities to enhance U.S. food aid, though challenges can constrain its implementation. This hearing is of particular importance given today's environment of increasing emergencies and growing global food insecurity, in which the United States and other donors face intense pressures to feed the world's expanding undernourished population. In September 2008, the United Nations (UN) Food and Agriculture Organization (FAO) reported that high food prices had resulted in the number of undernourished people reaching a record 963 million. LRP has increasingly become a key element in the multilateral food aid response over the past decade. Most bilateral donors of food aid have switched from commodity-based in-kind food aid to a cash-based food assistance program in recent years. As the largest international food aid donor, contributing over half of all food aid supplies to alleviate hunger and support development, the United States plays an important role in responding to emergency food assistance needs and ensuring global food security. The large majority of U.S. food assistance is for U.S.-grown commodities purchased competitively in the United States and shipped to recipient …
Date: June 4, 2009
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
The Iran Sanctions Act (ISA) (open access)

The Iran Sanctions Act (ISA)

This report discusses the increasing international pressure on Iran to curb its nuclear program and how that pressure discourages foreign firms from investing in Iran's energy sector, hindering Iran's efforts to expand oil production. This report discusses the history and progress of the formal U.S. effort to curb energy investment in Iran, which began with the Iran Sanctions Act (ISA) in 1996. This report also discusses U.S. concerns that other nations, e.g., U.S. allies, Russia, and China, are not as strict with their economic sanctions against Iran, and how U.S. policymakers are combating this reticence with various pieces of legislation.
Date: June 4, 2009
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Iran's Activities and Influence in Iraq (open access)

Iran's Activities and Influence in Iraq

This report discusses the relationship between Iraq and Iran in the post-Saddam Hussein era, with particular focus on what Iran's intentions and/or long-term goals may be for increasing its influence in Iraq. The report explores the various strategies that Iran has used to spread its influence throughout Iraq's military and political spheres. The report also addresses the United States' concern over the Iran-Iraq relationship, especially as it concerns armed Shiite factions and U.S. efforts to stabilize Iraq.
Date: June 4, 2009
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Measurement of sound speed vs. depth in South Pole ice: pressure waves and shear waves (open access)

Measurement of sound speed vs. depth in South Pole ice: pressure waves and shear waves

We have measured the speed of both pressure waves and shear waves as a function of depth between 80 and 500 m depth in South Pole ice with better than 1% precision. The measurements were made using the South Pole Acoustic Test Setup (SPATS), an array of transmitters and sensors deployed in the ice at the South Pole in order to measure the acoustic properties relevant to acoustic detection of astrophysical neutrinos. The transmitters and sensors use piezoceramics operating at {approx}5-25 kHz. Between 200 m and 500 m depth, the measured profile is consistent with zero variation of the sound speed with depth, resulting in zero refraction, for both pressure and shear waves. We also performed a complementary study featuring an explosive signal propagating vertically from 50 to 2250 m depth, from which we determined a value for the pressure wave speed consistent with that determined for shallower depths, higher frequencies, and horizontal propagation with the SPATS sensors. The sound speed profile presented here can be used to achieve good acoustic source position and emission time reconstruction in general, and neutrino direction and energy reconstruction in particular. The reconstructed quantities could also help separate neutrino signals from background.
Date: June 4, 2009
Creator: Collaboration, IceCube & Klein, Spencer
Object Type: Article
System: The UNT Digital Library
Military and Dual-Use Technology: Covert Testing Shows Continuing Vulnerabilities of Domestic Sales for Illegal Export (open access)

Military and Dual-Use Technology: Covert Testing Shows Continuing Vulnerabilities of Domestic Sales for Illegal Export

Testimony issued by the Government Accountability Office with an abstract that begins "Terrorists and foreign governments regularly attempt to obtain sensitive dual-use and military technology from manufacturers and distributors within the United States. Although the Department of State (State) or Department of Commerce (Commerce), or both, must grant approval to export sensitive military and dual-use items, publicly reported criminal cases show that individuals can bypass this requirement and illegally export restricted items such as night-vision goggles. In the wrong hands, this technology poses a risk to U.S. security, including the threat that it will be reverse engineered or used directly against U.S. soldiers. Given the threat, the subcommittee asked GAO to conduct undercover tests to attempt to (1) purchase sensitive dual-use and military items from manufacturers and distributors in the United States; and (2) export purchased items without detection by domestic law-enforcement officials. To perform this work, GAO used fictitious individuals, a bogus front company, and domestic mailboxes to pose as a buyer for sensitive items. GAO, in coordination with foreign law-enforcement officials, also covertly attempted to export dummy versions of items. GAO interviewed relevant agencies to gain an understanding of which items were in demand by terrorists and foreign …
Date: June 4, 2009
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Military Installation Real Property and Services: Proposed Legislation in the 111th Congress (open access)

Military Installation Real Property and Services: Proposed Legislation in the 111th Congress

This report analyzes the key provisions of legislation that would modify or expand statutory authorities granted to senior executives of the Department of Defense (DOD), identifies probable effects of the proposed amendments to existing law, and suggests issues raised for congressional consideration.
Date: June 4, 2009
Creator: Else, Daniel H.
Object Type: Report
System: The UNT Digital Library